Rice University

Events at Rice

Seminar

Electrical and Computer Engineering
Richard E. Smalley Institute for Nanoscale Science and Technology

Speaker: Mikhail Belkin
Assistant Professor, Department of Electrical & Computer Engineering
The University of Texas at Austin

mm-Wave, THz, and Infrared Seminar Series
Broadly-tunable room-temperature THz quantum cascade laser sources

Thursday, October 17, 2013
4:00 PM  to 5:00 PM

1064  Duncan Hall
Rice University
6100 Main St
Houston, Texas, USA

I will discuss the development of the first mass-manufacturable room-temperature electrically-pumped semiconductor laser sources operating in the terahertz spectral range. Terahertz radiation is produced through intracavity difference-frequency generation in dual-wavelength mid-infrared quantum cascade lasers tailored to have giant optical nonlinearity associated with intersubband transitions in the active region. Devices are widely-tunable in 1-5 THz spectral range and demonstrate best performance around 3.5-4 THz. At this frequency, terahertz peak power output from a ~2mm-long 25µm-wide ridge waveguide laser exceeds 0.1 mW and mid-infrared-to-terahertz conversion efficiency exceeds 0.5 mW/W2.


Hosts: Junichiro Kono, Daniel Mittleman, Aydin Babakhani

Biography of Mikhail Belkin:
Mikhail Belkin received BS degrees in Physics and Mathematics from Moscow Institute of Physics and Technology in 1998 and PhD in Physics in from the University of California at Berkeley in 2004. In 2004-2008 he did his postdoctoral work in Prof. Federico Capasso group in the School of Engineering and Applied Sciences. In Fall 2008, he joined the faculty of the Electrical and Computer Engineering Department of the University of Texas at Austin as an Assistant Professor.
His current research interests include nonlinear optical phenomena in quantum cascade lasers and other devices based on intersubband transitions, sub-wavelength resolution microscopy in mid- and far-infrared, THz radiation sources, optical metamaterials, and plasmonic devices.
Dr. Belkin’s recent awards include the NSF CAREER Award (2012), the DARPA Young Faculty Award (2012), the Norman Hackerman Advanced Research Program Award for Early Career Investigators from the state of Texas (2012), and the AFOSR Young Investigator Program Award (2009). He has authored or co-authored over 100 journal and conference papers



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